Yoga integrates mind, breath, and body through prana/apana and sthira/sukha principles. Human body consists of 100 trillion cells with membrane, nucleus, and cytoplasm. Cells must balance containment (sthira) with permeability (apana)
Diaphragm is a muscle at bottom of lungs for deep breathing. Improves oxygen intake and reduces stress response. Activates parasympathetic nervous system instead of sympathetic
Deep breathing helps oxygenate the body and reduce stress. Inhale through nose, letting stomach expand by inch or two. Place hand on belly to check proper breathing. Exhale for twice as long as inhale, fully expelling air. Practice 5-20 repetitions in a row
Forceful nose blowing can damage ears and cause blood vessel ruptures. Dramatic "ACHOO!" can rupture blood vessels and damage ears. Squeezing nose with tissue prevents proper air passage